WO2023221413A1 - Couvercle de puits en béton à haute performance renforcé par un polymère en émulsion et procédé de fabrication pour celui-ci - Google Patents

Couvercle de puits en béton à haute performance renforcé par un polymère en émulsion et procédé de fabrication pour celui-ci Download PDF

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Publication number
WO2023221413A1
WO2023221413A1 PCT/CN2022/129698 CN2022129698W WO2023221413A1 WO 2023221413 A1 WO2023221413 A1 WO 2023221413A1 CN 2022129698 W CN2022129698 W CN 2022129698W WO 2023221413 A1 WO2023221413 A1 WO 2023221413A1
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WO
WIPO (PCT)
Prior art keywords
parts
emulsion polymer
performance concrete
reinforced high
powder
Prior art date
Application number
PCT/CN2022/129698
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English (en)
Chinese (zh)
Inventor
苏新禄
时磊
毛荣良
钱佳佳
Original Assignee
苏州市兴邦化学建材有限公司
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Application filed by 苏州市兴邦化学建材有限公司 filed Critical 苏州市兴邦化学建材有限公司
Publication of WO2023221413A1 publication Critical patent/WO2023221413A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
    • C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
    • C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention belongs to the technical field of concrete materials, and in particular relates to an emulsion polymer reinforced high-performance concrete manhole cover and a preparation method thereof.
  • Ultra-high performance concrete (hereinafter referred to as UHPC) is denser, stronger, and more wear-resistant than ordinary concrete. Under the same load conditions, ultra-high performance concrete can be made thinner and lighter than ordinary concrete.
  • UHPC Ultra-high performance concrete
  • the strength of the material cannot be fully developed under natural curing conditions, so steam curing or other curing methods are generally used.
  • the compressive strength is high, the flexural strength of inorganic cementitious materials is relatively low relative to the compressive strength. The material has a high modulus and its vibration and impact resistance can be further improved.
  • the main technical problem solved by the present invention is to provide an emulsion polymer reinforced high-performance concrete manhole cover and a preparation method thereof.
  • the flexural strength is significantly improved, especially the early flexural strength, the wear resistance is significantly improved, the material modulus is reduced, and the vibration resistance is improved. Impact performance is improved and weather resistance is improved.
  • one technical solution adopted by the present invention is to provide an emulsion polymer reinforced high-performance concrete manhole cover, including inorganic gelling materials, emulsion polymers, aggregate fillers, powder fillers, additives and toners , each component is calculated based on 1000 parts by mass: 250-500 parts of inorganic gelling material, 20-150 parts of emulsion polymer, 200-500 parts of aggregate filler, 50-300 parts of powder filler, 0.5-10 parts of additives , 0.1-50 parts of toner.
  • the inorganic cementing material is one or more combinations of cement, mineral powder, gypsum or silica fume;
  • the cement is Portland cement, sulfoaluminate cement or aluminate
  • One or several combinations in cement 52.5 Portland cement is preferred;
  • mineral powder is a product that meets or exceeds S95 grade;
  • silica fume is a product with a silica content of not less than 85%, and a silica content of 90% is preferred
  • silica fume and gypsum ⁇ or ⁇ hemihydrate gypsum is used alone or in combination. It is used with sulphoaluminate cement or Portland cement-aluminate cement system. ⁇ hemihydrate gypsum is preferred.
  • the emulsion polymer is styrene-acrylic emulsion, pure acrylic emulsion or silicon-acrylic emulsion. Pure acrylic emulsion or silicon-acrylic emulsion with better weather resistance is preferred, and preferably has good compatibility with cement and glass. Pure acrylic emulsion with a melting temperature higher than 10°C.
  • the aggregate filler is one or more combinations of gravel, silica sand, silicon carbide sand or corundum sand. Aggregates with Mohs hardness ⁇ 7 and crush value ⁇ 10% are preferred. .
  • the powder filler is one or more combinations of quartz powder, silicon carbide sand powder, alumina powder, heavy calcium powder or microbead powder.
  • the additive is one or more combinations of water reducing agent, defoaming agent, dispersant or cross-linking agent.
  • the toner is used for colored manhole covers, specifically liquid color paste or solid toner.
  • a preparation method for emulsion polymer-reinforced high-performance concrete manhole covers including the following steps:
  • the prepared material body is poured into a special mold and allowed to stand for a period of time to solidify and release from the mold, thereby obtaining an emulsion polymer-reinforced high-performance concrete manhole cover.
  • the mixture in the steps S1 and S2, the mixture is stirred at a rotation speed of 300 r/min for 1 minute, and in the steps S3 and S4, the mixture is stirred at a rotation speed of 60 r/min for 3 minutes.
  • step S5 the pouring adopts vibration molding process
  • the material of the special mold is PVA plastic mold
  • the frame is made of steel.
  • the beneficial effects of the present invention are: the emulsion polymer reinforced high-performance concrete manhole cover and its preparation method pointed out in the present invention have significantly improved flexural strength, especially early flexural strength, significantly improved wear resistance, and reduced material modulus. The vibration and impact resistance is improved, and the weather resistance is improved.
  • the concrete of emulsion polymer-free concrete manhole cover is composed of the following raw materials in parts by weight (total parts are 1000): 300 parts of cement, 590 parts of aggregate, 10 parts of color paste and 100 parts of water.
  • the preparation method of resin-free concrete manhole cover specifically includes the following steps:
  • the aggregate described in S1 is a mixture of silica sand and gravel, with a ratio of 4:6; the silica sand is graded from 4 mesh to 100 mesh, Mohs hardness ⁇ 7, gravel particle size 5-15mm, crushing value ⁇ 10% .
  • the mold used to produce manhole covers described in S4 is made of PVA plastic mold, and the frame is made of steel.
  • the pouring process during the production of the manhole cover adopts a vibration molding process.
  • Emulsion polymer is used to reinforce UHPC concrete manhole covers to produce emulsion polymer-reinforced high-performance concrete manhole covers, which can reduce material shrinkage, increase the wear resistance of the material surface, and improve the material's vibration resistance without changing the molding and pouring process. impact strength, improve the weather resistance of materials, etc. Colored products also help improve color uniformity.
  • the present invention points out an emulsion polymer reinforced high-performance concrete manhole cover and its preparation method.
  • the flexural strength is significantly improved, especially the early flexural strength, the wear resistance is significantly improved, the material modulus is reduced, and the vibration resistance is reduced. Impact performance is improved and weather resistance is improved.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention divulgue un couvercle de puits en béton à haute performance renforcé par un polymère en émulsion et un procédé de fabrication pour celui-ci. Le couvercle de puits en béton comprend un matériau de cimentation inorganique, un polymère en émulsion, un granulat de remplissage, une poudre de remplissage, un additif et un toner, les constituants dans 1000 parties en masse comprenant : 250 à 500 parties du matériau de cimentation inorganique, 20 à 150 parties du polymère en émulsion, 200 à 500 parties du granulat de remplissage, 50 à 300 parties de la poudre de remplissage, 0,5 à 10 parties de l'additif, et 0,1 à 50 parties du toner. Dans la présente invention, la résistance anti-flexion est remarquablement améliorée, en particulier la résistance anti-flexion précoce, la résistance à l'usure est remarquablement améliorée, le module du matériau est réduit, les performances anti-choc et en vibration sont améliorées, et la résistance aux intempéries est améliorée.
PCT/CN2022/129698 2022-05-16 2022-11-04 Couvercle de puits en béton à haute performance renforcé par un polymère en émulsion et procédé de fabrication pour celui-ci WO2023221413A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210526784.6 2022-05-16
CN202210526784.6A CN114933450A (zh) 2022-05-16 2022-05-16 一种乳液聚合物增强高性能混凝土井盖及其制备方法

Publications (1)

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WO2023221413A1 true WO2023221413A1 (fr) 2023-11-23

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WO (1) WO2023221413A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117819922A (zh) * 2023-12-27 2024-04-05 桐庐鼎力建材有限公司 一种生态混凝土及其生产工艺

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114933450A (zh) * 2022-05-16 2022-08-23 苏州市兴邦化学建材有限公司 一种乳液聚合物增强高性能混凝土井盖及其制备方法
CN116535174A (zh) * 2023-05-12 2023-08-04 经纬建材有限公司 一种仿沥青快硬自密实窨井盖安装材料

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CN1927937A (zh) * 2005-09-05 2007-03-14 肖力光 纳米改性纤维增强高性能聚合物混凝土井盖
CN105819775A (zh) * 2016-03-15 2016-08-03 苏州市兴邦化学建材有限公司 一种c80钢纤维混凝土检查井盖
CN110482914A (zh) * 2019-08-23 2019-11-22 苏州市兴邦化学建材有限公司 一种超高性能混凝土检查井盖
CN113582724A (zh) * 2021-08-26 2021-11-02 苏州市兴邦化学建材有限公司 一种彩色密封固化井盖及其制备方法
CN114933450A (zh) * 2022-05-16 2022-08-23 苏州市兴邦化学建材有限公司 一种乳液聚合物增强高性能混凝土井盖及其制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117819922A (zh) * 2023-12-27 2024-04-05 桐庐鼎力建材有限公司 一种生态混凝土及其生产工艺

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